{"id":3972,"date":"2007-07-07T20:44:33","date_gmt":"2007-07-07T20:44:33","guid":{"rendered":"http:\/\/blogs.thesocialmedia.com\/leblogenergie\/2007\/07\/07\/climat-et-nergi\/"},"modified":"2012-07-12T09:58:48","modified_gmt":"2012-07-12T09:58:48","slug":"climat-et-nergi","status":"publish","type":"post","link":"https:\/\/blogs.thesocialmedia.com\/leblogenergie\/2007\/07\/07\/climat-et-nergi\/","title":{"rendered":"Climat et \u00e9nergie : risques pour l’agriculture."},"content":{"rendered":"

\"Climat\"<\/a>L’agriculture et la s\u00e9curit\u00e9 alimentaire sont menac\u00e9s en France par deux risques.
Le premier est l’alternance de p\u00e9riodes s\u00e9ches\/humides, le second l’utilisation de ressources non ad\u00e9quates.
La zone la plus m\u00e9ridionale est menac\u00e9e de passer sous l’emprise d’une zone semi-aride. Une action est donc n\u00e9cessaire.
En effet, beaucoup de zones humides tampons, ont \u00e9t\u00e9 d\u00e9truites. Elles servaient de tampons absorbeurs en p\u00e9riode trop arros\u00e9es, et de r\u00e9servoir en p\u00e9riode plus s\u00e9che. Ce fait est av\u00e9r\u00e9 dans les montagnes du massif central, d\u00e9s le 18\u00b0si\u00e8cle, notamment, par J.Denis. Autre avantage, ces zones humides, en cas de grandes s\u00e8cheresses servaient de p\u00e2ture toujours verte.
Il est clair qu’on a \u00e9t\u00e9 trop loin dans l’ass\u00e8chement de ces zones.  D\u00e9sormais, les agriculteurs sont oblig\u00e9s \u00e0 la marche arri\u00e8re et refont \u00e0 grand frais, ce qui avait \u00e9t\u00e9 d\u00e9fait. De plus, il est clair qu’au si\u00e8cles pass\u00e9s, les marais \u00e9taient de grands pourvoyeurs d’\u00e9nergie et de biomasse. <\/p>\n

L’autre probl\u00e8me qui risque de se poser \u00e0 nos soci\u00e9t\u00e9s est celui des "bio"carburants. En effet, l\u00e0 aussi se pose la question du rendement des carburants utilis\u00e9s. Si d\u00e9j\u00e0 la deuxi\u00e8me g\u00e9n\u00e9ration de carburants de synth\u00e8se apparait, la logique industrielle en place, prend d’abord des produits courants (tel le ma\u00efs), abondant, mais dont l’utilisation en carburants est aberrant.
"En terme d’\u00e9nergie, Steffen Daebeler, de l’agence allemande des ressources renouvelables<\/a>, a d\u00e9clar\u00e9 que la recherche dans le domaine des biocarburants devait se concentrer sur l’expansion d’usines \u00e0 plus haut rendement \u00e9nerg\u00e9tique par hectare, ainsi que sur les technologies am\u00e9lior\u00e9es pour la production de biocombustibles, tels que les combustibles de seconde g\u00e9n\u00e9ration et l’utilisation de r\u00e9sidus. Il a \u00e9galement encourag\u00e9 les recherches dans les m\u00e9canismes de certification."
Cela implique, \u00e0 l’heure actuelle de bien maitriser la fili\u00e8re bio-carburants, pour qu’il y ait un rendement \u00e9nerg\u00e9tique net. Tel n’est pas le cas pour le ma\u00efs, pourtant en plein d\u00e9veloppement, et premier producteur d’\u00e9thanol.
Cela implique aussi, comme on a vu le cas pour le Br\u00e9sil r\u00e9cemment, une politique de contr\u00f4le des droits sociaux, pour \u00e9viter un retour \u00e0 l’esclavage<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"

L’agriculture et la s\u00e9curit\u00e9 alimentaire sont menac\u00e9s en France par deux risques. Le premier est l’alternance de p\u00e9riodes s\u00e9ches\/humides, le second l’utilisation de ressources non ad\u00e9quates.La zone la plus m\u00e9ridionale est menac\u00e9e de passer sous l’emprise d’une zone semi-aride. Une action est donc n\u00e9cessaire. En effet, beaucoup de zones humides tampons, ont \u00e9t\u00e9 d\u00e9truites. Elles […]<\/p>\n","protected":false},"author":198,"featured_media":5825,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5,8,6],"tags":[1687],"class_list":["post-3972","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-actualites","category-bio-carburants","category-rechauffement-climatique","tag-agence-allemande-des-ressources-renouvelables-retour-a-lesclavage"],"yoast_head":"\nClimat et \u00e9nergie : risques pour l'agriculture. - leblogenergie.com<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/blogs.thesocialmedia.com\/leblogenergie\/2007\/07\/07\/climat-et-nergi\/\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:title\" content=\"Climat et \u00e9nergie : risques pour l'agriculture. - leblogenergie.com\" \/>\n<meta name=\"twitter:description\" content=\"L’agriculture et la s\u00e9curit\u00e9 alimentaire sont menac\u00e9s en France par deux risques. 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